Pile wire motion for looms



July 11, 1939. v w, FOSTER 2,165,890

FILE WIRE MOTION FOR LOOMS Filed Ja 22 193 3 Sheets-Sheet 1 i 1 I l l.

J. W. FOSTER FILE WIRE MOTION FOR LOOMS Fil ed Jan. 22, 1938 :5Sheets-Sheet 2 James- M7. RJ ier,

July '11, 1939.

July 1939. FOSTER v 2,165,890

PILE WIRE MOTION FOR LOOMS Filed Jan. 22, 1938 s Sheets-Sheet :5

Jam es W Easter,

Patented July .11, 1939 r UNITED STATES PATENT OFFECE PILE WIRE MOTIONFOR LOOMS James William Foster, Freehold, N. J. Application January 22,1938, Serial No. 186,421

1 Claim. (Cl. 13942) My invention relates to a wire motionmechahertofore using other difierent forms of wire nism for insertingand withdrawing the pile wires operating mechanism. in the looms for themanufacturing of tapestry Still another object of the invention is toprocarpets or other pile fabrics, and has for an obvide a wire motionwherein the length of the iect to provide a mechanism that is simple andstroke for operating the hopper or clamp may be positive and arrangedfor great accuracy in ad- Carefu y dj ed d a er W ch a further justmentmicrometric adjustment may be made between A further object of theinvention is to so mm the driving pinion and a bevel gear, so that anystruct the mechanism that the hopper or clamp fractional part of a toothmay be allowed for, or, will travel at two rates of speed, that is, theclamp n feet, the adjustment y be e to W th n a will be withdrawn on theslower motion and inthousandth of an inch. sorted during the quickermotion. With these and other objects in view, the instill n th r bj ctof the in ti i t provention consists in certain new and novel feavide awire motion for pile ir looms that i tures and combination of parts, aswill be hereinrelatively simple in construction and eliminatafter morefully exp and P d out n the ing a number of parts heretofore necessaryin the claim. operation of the pile wire mechanisms. Referring HOW tothe dPaWihgS S ow g a pre- Still another object of the invention is toprof d embo iment and that much of a wire movide a mechanism forinserting and withdrawing tiOn for a m as necessary to strate the thepile wires that will be exceedingly sturdy in present invention,construction and so designed that it will with- 1 is an end elevationWith e pp or stand the hard usage to which a loom of this kind Clampabout midw y s travel a d the actuating i bj t d, means in the correctrelative position;

Still another object of the invention is to pro- 2 s a fragmentary pplan VieW Showing Vide a wire motion for looms wherein th thewire-actuated mechanism and several of the justments as to the length ofthe stroke and the Wires that are t be p a timing may be regulated to afine degree of ac- 3 is n enl r e l view how n the curacy, as not onlyis means provided for kdriving mechanism for the cable that actuates ingwhat might be termed ordinary adjustments, the wires, the mechanismbeing in the position at but means is provided for making micrometricthe starting of the 100m; adjustments, so that a loom provided with awire Fig. 4 is a Similar View but Showing the p s motion, about to bedescribed, may be stepped up at the end of the outward stroke andlikewise the from thirty-eight picks a minute to between end of theOutward mevement 0f the Cable;

forty-two and V Fig. 5 is a vertical sectional View showing the Stillanother object of the invention is to mierometric adjustable gear;provide a wire motion that will cut down the Fig-61$ a bottom plan VieWereof; usual breakage of the pile wires, as I have found 7 is anenlarged Sectional V ew taken on in practice that where the ordinaryloom will the line of Fig usually break from twelve to fourteen pilewires 3 s a a d Sectional View taken on ma certain period of time, thepresent device the line of 1; will cut down such loss from three to fourduring 9 is an enlarged fragmentary sectional View the Same period oftime taken on the line 99 of Fig. 1.

Still another object of the invention is to pro- Referrmg now to thedrawings it will be under Vide a Wire motion that permits of a lessnumber stood that I have shown only a detached part of i" i v 5 of partsthan heretofore cons1dered necessary; the bum frame togebher with enoughof v improved wire motion or mechanism sufficient to provide? a smo?thermotmn for the 100m gntafls enable those skilled in the art to understandthe less ad usting t1me and, as heretofore mentioned, construction andOperatmn thereof enables 100m to be n twenty to thirty Referring for themoment to Fig. 1, there is per {lent hlghel" rate of Speed, shown theframe 6 with the leg or pedestal 2 Still another object of the inventionis to protogether with the other supports 3. vide a wire motion thatW111 be positive in 210- If the mechanism is to be attached to certaintion, easily adjusted, easily regulated, and with types of looms now inuse, an additional frame relatlvely few parts to get out of order. Also,member twill be inserted, to which will be secured the mechanism may beeasily attached to looms the lower frame member 5. Pivoted, as at 6, in

the lower frame member 5 may be seen the lever "I with its slot 8 formedtherein, and to the left side of the lever (Fig. 1), it will be seenthat there is the lug or ear 9, which is provided with a series ofadjusting holes III, to one of which will be pivotally secured anadjustable connecting link II, shortly to be described.

Mounted just to the rear of the lever 1 is the relatively large crankdisk I2, on which is adjustably mounted a stud I3, which is providedwith the key portion or slide block M at its inner end to fit in theundercut guideway I 5 formed in the crank disk I2, the stud beingadjustable through the provision of the screw I6. Closely fitting aboutthe stud I3 may be seen the bronze block Il, which will be held inposition by the washers I8 and the nut I9. Thus, as the crank diskrevolves and the lever I oscillates, the block may slide within the slot8 of the lever, as will be readily appreciated. By providing a leverwith a straight slot, the block Il may be used to thus provide anaccurate connection, there being no lost motion between the lever andthe stud.

By adjusting the stud inwardly or outwardly of the disk, the throw ofthe lever may be regulated. Pivotally mounted in the same plane as thelever i may be seen the segment gear 28 with its teeth 2i designed tomesh with the driving pinion 22 mounted on the cross shaft 23, whichshaft is suitably mounted in the bearings 24 and 25, the latter bearingbeing hung from the frame, as at 25.

The bearing 24 is bolted in position for quick removal, so that on theinitial timing of the wire motion, the gear teeth of the pinion 22 maybe dropped within the proper teeth of the segment gear 2 3, as shown inFig. 3. Also located on this shaft 23 may be seen the cable drum 2?. Itis about this drum that the cable 28 is wound, the said cable passingabout the opposite sheaves 29 and The one bight 28 of the cable ispassed over the drum to the left (Fig. 1) and then secured to a spoke ofthe drum, whereas the other bight 28 of the cable passes over the drumin the opposite direction and secured, so that when the drum isrevolving, one bight pays off as the other bight takes up.

Pressing against the bights 28 and 28" may be seen the several idlerrollers 3i, which may be arranged to take up any slack as it appears inthe cable 28.

Secured to the cable 28 is the clamp 32, often spoken of as a wire boxor hopper, which is provided with the hook arm 33 that engages thevarious pile wires 34.

The wire guide and pile wires themselves form no part of the presentinvention, although it mi ht be mentioned, as seen in Fig. 8, that theclamp or hopper is simplified over the usual construction. In Fig. 8 maybe seen the yoke 35 of the hopper, which is clamped about the cable 28.

Referring now for the moment to Fig. 2, it will be seen that the crankdisk I2 is mounted on the cross shaft IZ which shaft is suitably mountedin bearings and is provided about centrally of its length with anadjustable gear 36, which will be described in detail, that, in turn,meshes with the pinion 37 mounted on the shaft 38, while also mounted onthis shaft 38 is the large gear 39, which, in turn, is operated by apinion 46, which will be driven by a motor (not shown).

It will be remembered that the cable drum 2'! is actuated by theoscillating segment gear 28, which, in turn, is connected with theoscillating lever, which latter is actuated by the relatively largecrank disk I2 mounted on the shaft I2 It will also be remembered thatthe length of the stroke may be varied by setting the stud I3 inwardlyor outwardly of the crank disk; and that openings I 0 are provided inthe lever I for several adjustments of the link I I, which link isprovided With a turnbuckle I I to provide for finer adjustments. Then,to provide a micrometric adjustment for the actuating mechanism, so thatany part of a tooth may be allowed for, that is, between the gear 36 andpinion 31, I have provided a plate 36 with its hub 36 which is splined,as at 36, to the timing shaft I2 on which, it will be remembered, ismounted the relatively large crank disk I2. The rear of the plate 36 isprovided with the radially extending arms 36 The gear 36 has the lugs 36arranged to, respectively, straddle the ends of the radial arms 36 asmay be clearly seen in Fig. 6. These lugs are threaded to receive theadjusting screws 36 Slots 36 are formed in the gear through which thebolts 36 pass into threaded openings in the plate 35 for securelyclamping the gear to the plate after adjustment is effected by thesetscrews.

It will be noticed also that the plate 3t has a hub which extends upwithin the gear for purposes of concentricity, as seen in Fig. 5. Afterthe gear has been adjusted so that the exact desired meshing of theteeth between the gear and its pinion 3'! is attained, that is, down toa micrometric measurement, the bolts 36 passing through the slots 36 inthe gear 36 and into threaded openings in the plate 3t will be lockedup.

It will be appreciated that it is extremely important that the length ofthe stroke and the timing be just as accurate as it is possible to bemade, due to the synchronizing of the different functions of a carpetweaving loom, and by providing the adjustments first-mentioned and thenthe micrometric adjustment of this gear on the driving shaft, which, inturn, it will be remembered, revolves the crank disk, operates thelever, and actuates the drum through the segment gear, the operation ofthe cable, together with its hopper or clamp for actuating the pilewires, can be controlled to the finest degree of accuracy.

In Fig. 3, I have shown the position of the segment gear 2!], lever I,and crank disk I2 for the starting of the loom, and when the parts arein this position, the hopper or clamp 32 on the cable would be to theextreme left of Fig. 1 and the cable and clamp about to start on theoutward travel to pull the pile wire through the loops to sever thesame.

It is desirable to have the pile wires move out of the shed more slowlythan on their inward travel, because the loops are now bound about thepile wires and necessitate greater pressure than when the pile wire isbeing inserted.

By glancing at Fig. 3, the position of the crank disk I2 and the lever'I is shown for the proper starting position, and the lever 'I, on therotation of the crank disk in a clockwise direction, will move over tothe position shown in Fig. 4 and the stud I3 will have revolved from thepoint a around to the point marked b.

A completion of rotation of the crank disk will again cause the lever 'Ito move over to the position shown in Fig. 3, while the stud is nowtraveling from the point b clockwise to the point a. Thus, the returnstroke of the lever is much faster than its forward stroke, as is wellknown and readily understood with a mechanism of this type.

Therefore, there is a relatively slow outward motion of the cable andits clamp to draw out the pile wire and a relatively quick motion forinserting another pile wire into the shed.

From Figs. 3 and 4, it will be seen that by the use of the turnbuckle Ilin the link II, an adjustment may be made between the segment gear 20and the lever 1 and also the link ll may be positioned in the desiredopening In in the lug 9 on the lever, which openings ID, by the way, are

located about centrally of the length of the lever, which is where theyshould be, so that the load to the connecting link is always aboutcentrally of the lever.

As heretofore mentioned, the pinion 23 may be set in the proper tooth ofthe segment gear and the extra teeth to the right of the pinion, asshown in Fig. 3, are for the proper setting of the pinion with relationto the segment gear 20.

After the parts have all been adjusted for the proper synchronization ofthe functions outlined, no further adjustments will be necessary for along continuous operation of the loom.

However, should it be necessary to change the length of the stroke orthe timing of the several parts, it is but the matter of a few minutes,as the adjustable parts are all easily accessible.

From the foregoing, it will be seen that I have provided a wire motionfor looms that is relatively simple in operation, dispensing with anumber of parts heretofore found necessary, and, at the same time, byemploying the various parts outlined, the timing and synchronization ofthe different parts may be adjusted with a fine degree of accuracy. Asbefore stated, the speed of the loom may be stepped up to around fiftypicks a minute.

I have also found in actual service that the various parts willwithstand the hard usage to which they are put, thus overcoming anyfrequent shut-downs of the looms for repairs or adjustmerits.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

In a loom for weaving with pile wires, the combination of a wire box, acable for imparting motion to the Wire box, a cable drum and pulleysupon which the cable is mounted, a pinion associated with the cabledrum, a segmental gear engaged by the pinion, an oscillating leverpivoted in substantially the same horizontal plane as the pivotal pointof the segmental gear, said lever having a slot therein, a relativelylarge crank disk having a radially adjustable stud for timing purposes,a block accurately fitting about said stud and slidably movable withinthe aforesaid slot in the lever, said oscillating lever having aprojecting ear substantially midway its length provided with openingsfor fastening purposes, an adjustable rod connected to said segmentalgear and to an opening in said lever, said rod communicating motion fromthe said crank disk to the said segmental gear to thereby operate saidcable drum, a timing shaft for said crank disk, a main drive shaft forimparting motion to the said timing shaft and crank disk, and a mitregear connecting the two said shafts, said gear being adjustable ineither direction to the width of one tooth to thereby micrometricallyeffect the final position of the cable drum through the said oscillatinglever, adjustable rod, segmental gear, and pinion.

JAMES WHJLIAM FOSTER.

